I am curious about something. I am aware of the REM rebound effect, where a lack of REM sleep leads to more REM sleep later, to make up for lost time. The question I have regards the opposite concept.

If one sleeps a whole lot one day, will he or she eventually get to a point where they've had 'enough' REM sleep, and so will then just remain in dreamless sleep until a long period of wakefulness 'resets' their cycles?

The reason for the question is that yesterday I slept late, and took 2 long naps during the day. Recalled dreams throughout all these periods. Was excited to try Galantamine and Choline for my first time to increase the vividness of dreams, and planned to do so that night. So I went to bed at my normal time, and slept for about 4 hours. Again, I recalled a couple dreams. Got up, took 4mg of Galantamine and 500mg of choline, and went back to bed. For the next 5 hours or so, I slept with absolutely no dreams whatsoever. Not even a fleeting image or emotion. Nothing.

It seems as if the pills actually KILLED my dreams and/or the recall thereof. Since this seems unlikely, given all the rave reviews of these pills I see, the explanation must lie elsewhere...